Oops, a case of seeing what I expect, not what's there.
I would not expect any system to have an sa_family field inside
sockaddr_storage. The only choices I've seen are ss_family or
__ss_family. (RFC 2553 says __ss_family; RFC 3493 and POSIX 1003.1-2001
say ss_family).
I use this autoconf code for this:
dnl Check for sockaddr_storage.
dnl If it's present, check for ss_family.
dnl If ss_family isn't there, check for __ss_family and
dnl #define ss_family __ss_family if so.
dnl If neither is there, I don't know what to do.
dnl
AC_CHECK_TYPES([struct sockaddr_storage],
AC_CHECK_MEMBER([struct sockaddr_storage.ss_family],,
AC_CHECK_MEMBER([struct sockaddr_storage.__ss_family],
AC_DEFINE([ss_family],[__ss_family],[define to __ss_family if sockaddr_storage has that instead of ss_family]),
AC_MSG_ERROR([cannot find ss_family in sockaddr_storage]),[
#include <sys/types.h>
#include <sys/socket.h>]),[
#include <sys/types.h>
#include <sys/socket.h>]),,[
#include <sys/types.h>
#include <sys/socket.h>])
Bill
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